# Inventory modeling

Learn how to model your inventory in commercetools.

**Learning objectives**

After completing this module, you should be able to:

- Understand the `InventoryEntry` object, its key attributes, and how it impacts different resources.
- Understand how to design a closed-loop inventory synchronization between commercetools and external systems.

**Agenda**

1. [Inventory management](/learning-model-your-product-catalog/inventory-modeling/inventory-management.md)
2. [Manage inventory with the Cart](/learning-model-your-product-catalog/inventory-modeling/cart-inventory.md)
3. [Model and query inventory](/learning-model-your-product-catalog/inventory-modeling/modeling-and-querying-inventory.md)
4. [Learning check](/learning-model-your-product-catalog/inventory-modeling/learning-check.md)

**Prerequisites**

- [Product data modeling](/learning-model-your-product-catalog/product-modeling/overview.md) module

**Audience**

- Solution architects and developers who need to model inventory in commercetools.

## Related pages

- [Area overview page with navigation](/learning-model-your-product-catalog.md)
- [Next page: Inventory management](/learning-model-your-product-catalog/inventory-modeling/inventory-management.md)
- [Search documentation and API specs](/search.md)